Rock types of volcanic reservoirs include mainly lava and pyroclastic rock.

火山岩储层岩石类型主要包括熔岩类、火山碎屑岩类。

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The lithology is mainly composed of lava basalt, pyroclastic rock and volcanic sedimentary rock.

其岩性主要为熔岩类玄武岩，火山碎屑岩和火山沉积岩；

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Nan-Jin-Shan Gold Deposit occurs in marine pyroclastic rock in Bei-shan late-paleozoic island arc belt.

南金山金矿床产于北山岛弧构造带内、海相火山碎屑岩之中。

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At first glance, it might seem obvious that it was through the action of flowing water (fluvial), but the Curiosity team needs to rule out the possibility that these rocks were deposited by the wind (aeolian) or by some kind of surge, such as the fast-moving clouds of gas and rock that will often plummet down the sides of particular types of volcano (a pyroclastic surge).

BBC: Curiosity Mars rover to investigate classic rock type